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You searched for: subject:"three dimensional"
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[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 7
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 8
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 9
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 6
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 6
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 13
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 6
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 7
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 8
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 7
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 7
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 7
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 13
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 8
[image]CAVE - NASA/Langley Research Center
Cave Automated Virtual Environment (CAVE). -- Cave pictures: Chris Sandridge and Eric Aumann in the CAVE.
Keywords: THREE DIMENSIONAL MOTION Photographs. --
Downloads: 12
[movies]The 3D Web
As web designers tried to make the internet look more like the "real" world, they experimented with three dimensional online environments. This program looks at several early examples. Mark Pesci explains VRML, the virtual reality modeling language. Chris Stuart demonstrates blacksun.com, a web site that uses VRML technology. Annette Louden demonstrates construct.net, an online environment for building VRML sites...
Keywords: VRML; avatar; three dimensional
Downloads: 1,214
[texts]Investigation of three-dimensional photoelastic models (k issledovaniyu ob'yemnykh fotouprugikh modeley) - Aben, Kh. K
Three-dimensional photoelastic models
Keywords: PHOTOELASTICITY; THREE DIMENSIONAL MODELS; PHOTOELASTICITY
Downloads: 66
[audio]Contemporary Issue Podcast
This podcast discusses the use of three dimensional technologies in the elementary school classroom.
Keywords: 3D technology; Three dimensional technology; Podcast
Downloads: 7
[audio]Stan White, Second Interview, Art Waves #32
In his second visit to Art Waves, poet Stan White continues his brilliant analysis of poetry as a sound medium. His background in 3-D photography lends another dimension to his vision of the way art works. Don't miss this chance to sit at the knee of a visionary.
Keywords: poetry; three-dimensional photography; sound; metaphor; language
Downloads: 20
[texts]On using collocation in three dimensions and solving a model semiconductor problem (Volume 100) - Marchiando, J.F.
Journal of Research of the National Institute of Standards and Technology
Keywords: three-dimensional; boundary value problems; collocation; semiconductor
Downloads: 99
[image]Mini Wars The Disagreement On Verona 18 - Nathaniel Torres
Mini Wars An Iced* Adventure The Disagreement on Verona 18 A 3DDS (3 Dimensional Digital Sculpture) Designed with Google SketchUp 8 and GIMP (with some help from Photoshop Elements) Created by Nathaniel Torres Copyright (c) 2011 All Rights Reserved gift.tower3000@gmail.com Please do not modify this artwork. You can open it using Google SketchUp 8 (which is a free download).
Keywords: Google SketchUp; 3D Art; Three Dimensional Digital Sculpture
Downloads: 8
[texts]Integrated support for manipulation and display of 3D objects for the Command and Control Workstation of the Future - Munson, Steven Alfred.;Zyda, Michael J.
"June 1989."
Keywords: Three-dimensional display systems; Data processing; Computer simulation
Downloads: 25
[audio]3DF - Live @ Red Square Albany, NY 8/3/2007
3DF Live at the Red Square Albany, NY 3DF is: Tommy Aldridge - Keys Dave Spadaro - Guitar Andrew Del - Bass Mike Del - Drums
Keywords: 3DF; Three Dimensional Figures; Red Square; Live
Downloads: 21
[texts]Trailing Vortex Measurements in the Wake of a Hovering Rotor Blade with Various Tip Shapes - Martin, Preston B.
This work examined the wake aerodynamics of a single helicopter rotor blade with several tip shapes operating on a hover test stand. Velocity field measurements were conducted using three-component laser Doppler velocimetry (LDV). The objective of these measurements was to document the vortex velocity profiles and then extract the core properties, such as the core radius, peak swirl velocity, and axial velocity...
Keywords: COMPUTATIONAL FLUID DYNAMICS; ALGORITHMS; THREE DIMENSIONAL MODELS; AIRFOILS; CARTESIAN COORDINATES
Downloads: 110
[texts]An extension of infinitesimal calculus - Laugwitz, D.
No Abstract Available
Keywords: LINEAR EQUATIONS; SUPERSONIC FLOW; WINGS; PROBLEM SOLVING; THREE DIMENSIONAL FLOW
Downloads: 111
[texts]Support Services for the Laboratory for Astronomy and Solar Physics - Cornett, Robert H
This report covers software and science support activities for the Laboratory for Astronomy & Solar Physics at NASA/Goddard Space Flight Center.
Keywords: HELIOSPHERE; MAGNETOHYDRODYNAMICS; SOLAR PHYSICS; SOLAR CORONA; THREE DIMENSIONAL MODELS; SUN
Downloads: 203
[texts]Preliminary Results of an Altitude-Wind-Tunnel Investigation of an Axial-Flow Gas Turbine-Propeller Engine - Geisenheyner, Robert M.
Performance properties and operational characteristics of an axial-flow gas turbine-propeller engine were determined. Data are presented for a range of simulated altitudes from 5,000 to 35,0000 feet, compressor inlet- ram pressure ratios from 1.00 to 1.17, and engine speeds from 8000 to 13,000 rpm.
Keywords: LAMINAR BOUNDARY LAYER; THREE DIMENSIONAL FLOW; VELOCITY; MATHEMATICAL MODELS
Downloads: 68
[texts]Three-dimensional boundary layer equation of an ionized gas in the presence of a strong magnetic field technical report - Wu, C.-S
No Abstract Available
Keywords: IONIZED GASES; MAGNETIC FIELDS; MAGNETIC PROPERTIES; THREE DIMENSIONAL BOUNDARY LAYER
Downloads: 93
[texts]The Protein Data Bank: Current status and future challenges (Volume 101) - Abola, E.E.
Journal of Research of the National Institute of Standards and Technology
Keywords: x-ray crystallography; database; federation; protein structure; three-dimensional structure
Downloads: 84
[texts]3D imaging systems for manufacturing, construction, and mobility (Volume NIST Technical Note 1682) - Cheok, Geralding; Juberts, Maris; Franaszek, Marek; Lytle, Alan.

Keywords: Manufacturing processes--Automation; Construction--Automation; Three-dimensional imaging; Imaging systems
Downloads: 58
[texts]GENERALIZATION OF BOUNDARY-LAYER MOMENTUM-INTEGRAL EQUATIONS TO THREE-DIMENSIONAL FLOWS INCLUDING THOSE OF ROTATING SYSTEM - Mager, A
No Abstract Available
Keywords: BOUNDARY LAYERS; NAVIER-STOKES EQUATION; ROTATION; THREE DIMENSIONAL FLOW
Downloads: 268
[texts]A baseline protocol for personal hygiene - NON
Personal hygiene protocol for man in spacecraft environment
Keywords: MODELS; QUANTUM MECHANICS; REACTIVITY; SCATTERING CROSS SECTIONS; SURFACE PROPERTIES; THREE DIMENSIONAL MODELS; MOLECULAR ROTATION; POTENTIAL ENERGY; THREE DIMENSIONAL MOTION
Downloads: 173
[texts]Stochastic Modeling of Laminar-Turbulent Transition - Rubinstein, Robert
Stochastic versions of stability equations are developed in order to develop integrated models of transition and turbulence and to understand the effects of uncertain initial conditions on disturbance growth. Stochastic forms of the resonant triad equations, a high Reynolds number asymptotic theory, and the parabolized stability equations are developed.
Keywords: UNSTEADY FLOW; DUCTS; NAVIER-STOKES EQUATION; STATISTICAL ANALYSIS; UNSTEADY AERODYNAMICS; TURBOMACHINERY; APPLICATIONS PROGRAMS (COMPUTERS); THREE DIMENSIONAL FLOW; THREE DIMENSIONAL MODELS; COMPUTATIONAL FLUID DYNAMICS; HEAT TRANSFER; ROTOR BLADES (TURBOMACHINERY)
Downloads: 45
[texts]Experimental and Calculational Studies of the Interactions of BF3 with Fluoroethers - Zehe, Michael J.
BF3 was co-condensed with (C2H5)2O, (CF3CH2)2O and (C2F5)2O in excess argon at 15 K. Infrared spectra of the matrices showed a definite Lewis acid-base interaction between BF3 and diethyl ether; a weak but definite interaction with bis(2,2,2,-trifluorodiethyl)ether, and no observable interaction with perfluorodiethyl ether. Molecular orbital (MO) calculations complemented the experimental observations by revealing that fluorine atoms on the ethers decreased electron localization about the oxygen...
Keywords: BOUNDARY LAYER FLOW; SECONDARY FLOW; THREE DIMENSIONAL BOUNDARY LAYER; THREE DIMENSIONAL FLOW; FLOW CHARACTERISTICS; POTENTIAL FLOW; CENTRIFUGAL FORCE; PRESSURE GRADIENTS; CONVERGENCE; WALL FLOW
Downloads: 92
[texts]Remarks on the pressure distribution over the surface of an ellipsoid, moving translationally through a perfect fluid - Munk, M. M
The pressure distribution over ellipsoids when in translatory motion through a perfect fluid is calculated. A method to determine the magnitude of the velocity and of the pressure at each point of the surface of an ellipsoid of rotation is described.
Keywords: ANGLE OF ATTACK; MISSILE BODIES; NOSES (FOREBODIES); POTENTIAL FLOW; STEADY FLOW; BODIES OF REVOLUTION; MATHEMATICAL MODELS; THREE DIMENSIONAL FLOW; THREE DIMENSIONAL MODELS; VORTICES; WAKES; AERODYNAMIC FORCES; AERODYNAMIC LOADS
Downloads: 101
[texts]Three-dimensional supersonic equilibrium flow of a gas around bodies at the angle of attack - Chushkin, P. I.
Three-dimensional supersonic flow of gas in thermodynamic equilibrium around body at angle of attack
Keywords: ANGLE OF ATTACK; GAS FLOW; SUPERSONIC FLOW; THERMODYNAMIC EQUILIBRIUM; THREE-DIMENSIONAL FLOW; DIMENSIONS; EQUILIBRIUM FLOW; GAS FLOW; SUPERSONIC FLOW; THERMODYNAMIC EQUILIBRIUM; THREE DIMENSIONAL FLOW; TRIGONOMETRY; ANGLE OF ATTACK
Downloads: 52
[texts]Center for Advanced Space Propulsion Second Annual Technical Symposium Proceedings - NON
The proceedings for the Center for Advanced Space Propulsion Second Annual Technical Symposium are divided as follows: Chemical Propulsion, CFD; Space Propulsion; Electric Propulsion; Artificial Intelligence; Low-G Fluid Management; and Rocket Engine Materials.
Keywords: FLOW DISTRIBUTION; IMAGING TECHNIQUES; RAYLEIGH SCATTERING; SUPERSONIC BOUNDARY LAYERS; THREE DIMENSIONAL FLOW; THREE DIMENSIONAL MODELS; BOUNDARY LAYERS; SHOCK WAVES; SUPERSONIC INLETS
Downloads: 98
[texts]Three-dimensional flow of ideal gas past smooth bodies - Babenko, K. I.
Nonaxisymmetric three-dimensional flow field of ideal gas about smooth body of revolution
Keywords: AXISYMMETRIC FLOW; BODY OF REVOLUTION; FLOW FIELD; IDEAL GAS; THREE-DIMENSIONAL FLOW; BODIES OF REVOLUTION; FLOW DISTRIBUTION; GAS FLOW; IDEAL GAS; SMOOTHING; SYMMETRY; THREE DIMENSIONAL FLOW; AXISYMMETRIC FLOW
Downloads: 272
[texts]Difference methods of solving three- dimensional problems in gas dynamics - Babenko, K. I.
Differential calculations for three-dimensional supersonic gas flow around smooth body
Keywords: DIFFERENTIAL CALCULUS; THREE-DIMENSIONAL FLOW; GAS DYNAMICS; GAS FLOW; MATRICES (MATHEMATICS); SMOOTHING; SUPERSONIC FLOW; THREE DIMENSIONAL FLOW; DIFFERENTIAL ALGEBRA; GAS DYNAMICS
Downloads: 73
[texts]Exponential Formulae and Effective Operations - Mielnik, Bogdan
One of standard methods to predict the phenomena of squeezing consists in splitting the unitary evolution operator into the product of simpler operations. The technique, while mathematically general, is not so simple in applications and leaves some pragmatic problems open. We report an extended class of exponential formulae, which yield a quicker insight into the laboratory details for a class of squeezing operations, and moreover, can be alternatively used to programme different type of operati...
Keywords: MONTE CARLO METHOD; COMPUTATIONAL FLUID DYNAMICS; THREE DIMENSIONAL MODELS; FLOW DISTRIBUTION; COMPUTERIZED SIMULATION; TRANSITION FLOW; KNUDSEN FLOW; APPLICATIONS PROGRAMS (COMPUTERS); THREE DIMENSIONAL FLOW; RUN TIME (COMPUTERS); COMPUTER TECHNIQUES
Downloads: 62
[texts]Global Interferometric Skin-Friction Measurements on a Wingtip Model - Zilliac, Gregor
Skin-friction distribution on surfaces of flight vehicles is desirable for several reasons. Aerodynamicists would like to know where transition occurs and if separation is present. Turbulence modelers are interested in validating skin-friction (drag) predictions. Finally, if it were possible to sum the skin-friction distribution on a lifting wind tunnel model, it would be possible to determine the viscous contribution to the total drag, a quantity not readily measured independently of the induce...
Keywords: PLANETARY SYSTEMS; NEBULAE; DUST; METEORITES; COMETS; THREE DIMENSIONAL MODELS; ASTEROIDS; MILLIMETER WAVES
Downloads: 19
[texts]Active Control of Separation from the Slat Shoulder of a Supercritical Airfoil - Pack, LaTunia G.
Active flow control in the form of zero-mass-flux excitation was applied at the slat shoulder of a simplified high-lift airfoil to delay flow separation. The NASA Energy Efficient Transport (EET) supercritical airfoil was equipped with a 15% chord simply hinged leading edge slat and a 25% chord simply hinged trailing edge flap. The cruise configuration data was successfully reproduced, repeating previous experiments...
Keywords: THREE DIMENSIONAL MODELS; FLUID JETS; JET MIXING FLOW; MATHEMATICAL MODELS; WALL JETS; CURVATURE
Downloads: 57
[texts]Alternative power-generation systems - English, R. E
The present state of the art of thermal power systems is surveyed. Because of the great potential variety of thermal power systems, the heat sources, the power conversion systems, and the integration of thermal power systems with missions are treated sequentially.
Keywords: CONCAVITY; LAMINAR BOUNDARY LAYER; THREE DIMENSIONAL FLOW; EIGENVALUES; TURBULENT FLOW; VORTICES
Downloads: 99
[texts]Variability of Winter Air Temperature in Mid-Latitude Europe - Otterman, J.
The aim of this paper is to report extreme winter/early-spring air temperature (hereinafter temperature) anomalies in mid-latitude Europe, and to discuss the underlying forcing to these interannual fluctuations. Warm advection from the North Atlantic in late winter controls the surface-air temperature, as indicated by the substantial correlation between the speed of the surface southwesterlies over the eastern North Atlantic (quantified by a specific Index Ina) and the 2-meter level air temperat...
Keywords: COMPUTATIONAL FLUID DYNAMICS; TEXTURES; THREE DIMENSIONAL MODELS; FLOW VISUALIZATION; FLOW DISTRIBUTION; TWO DIMENSIONAL MODELS; ADVECTION
Downloads: 89
[texts]lnflight Activity Breaks Reduce Sleepiness in Pilots - Neri, David
This flight simulator study examined whether regularly spaced brief bouts of controlled physical activity (standing up, walking, stretching) combined with social interaction could improve alertness and performance during a long, uneventful, overnight flight requiring extended wakefulness and vigilance. The data obtained from this study support NASA's Aero-Space Technology Enterprise and its objective of reducing the aircraft accident rate Fourteen two-man crews flew a 6-hour 12:00- 8:00 a.m.) un...
Keywords: THREE DIMENSIONAL MODELS; COMPUTER TECHNIQUES; MATHEMATICAL MODELS; ULTRASONICS; TOMOGRAPHY; MAMMARY GLANDS; CANCER
Downloads: 75
[texts]Chemical Alteration on Mars Indicated by the Iron-Manganese Ratio - Yen, A. S.
The Alpha Particle X-ray Spectrometers (APXS) onboard the Mars Exploration Rovers (MER) have measured the chemical compositions of over 400 samples on the surface of Mars. Fe and Mn are among the elements which are well established by this instrumentation. Fe 2 and Mn2 have nearly the same ionic radii and distribute similarly in primary igneous rocks, maintaining a consistent Fe:Mn ratio. Upon exposure to an oxidative weathering environment, Fe 3 and Mn4 are commonly formed, and elemental fracti...
Keywords: METEORITE CRATERS; PHOTOGRAMMETRY; LASER APPLICATIONS; EARTH OBSERVATIONS (FROM SPACE); ANALOGS; THREE DIMENSIONAL MODELS; ARIZONA
Downloads: 20
[texts]Automated Environment Generation for Software Model Checking - Tkachuk, Oksana
A key problem in model checking open systems is environment modeling (i.e., representing the behavior of the execution context of the system under analysis). Software systems are fundamentally open since their behavior is dependent on patterns of invocation of system components and values defined outside the system but referenced within the system. Whether reasoning about the behavior of whole programs or about program components, an abstract model of the environment can be essential in enabling...
Keywords: THREE DIMENSIONAL MODELS; VARIABILITY; ANNUAL VARIATIONS; TRANSPORT THEORY; TROPICAL REGIONS; DATA CORRELATION; SENSITIVITY; NONUNIFORMITY; WIND DIRECTION
Downloads: 82
[texts]Four unresolved problems of planetary cosmogony - Levin, B. YU
Unsolved problems of planetary origins
Keywords: GAS FLOW; QUANTITATIVE ANALYSIS; THREE DIMENSIONAL FLOW; COORDINATES; FLOW CHARACTERISTICS; FLOW GEOMETRY; SURFACE PROPERTIES
Downloads: 63
[texts]TetrUSS Capabilities for S and C Applications - Frink, Neal T.
TetrUSS is a suite of loosely coupled computational fluid dynamics software that is packaged into a complete flow analysis system. The system components consist of tools for geometry setup, grid generation, flow solution, visualization, and various utilities tools. Development began in 1990 and it has evolved into a proven and stable system for Euler and Navier-Stokes analysis and design of unconventional configurations...
Keywords: DAMAGE ASSESSMENT; DEBONDING (MATERIALS); DEGRADATION; DELAMINATING; CONSTRUCTION; FAILURE; FLANGES; STRINGERS; THREE DIMENSIONAL MODELS
Downloads: 69
[texts]Analysis of Behaviour of U-Girder Bridge Decks
The concept of U-shaped bridge girder is now beingincreasingly adopted in urban metro rail projects and forreplacing old bridges where there is a constraint on verticalclearance. These bridge decks are commonly designed inpractice using simplified methods that assume beam action ofthe webs in the longitudinal direction and similar flexuralaction of the deck slab in the transverse direction. However,such assumptions can lead to errors...
Keywords: U-girder bridge deck; Simplified methods; Three-dimensional finite element analysis
Downloads: 6
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